JPH10138861A - Arrangement structure for occupant protection device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely absorb a secondary collision load of the head part of an occupant in low-load collision in case of adopting such a structure that a bag is stored in the folded state between a body inner panel and an interior material. SOLUTION: An energy absorbing member 84 is arranged in the front side of a space 80 in a front pillar 20 side and a case 26 storing an air bag body 16 in the rear side of the space 80 is arranged. The cross sectional shape of the direction (crossing at right angles with the longitudinal direction perpendicular to longitudinal direction) of the case 26 is an approximately parallelogram and an energy absorbing part 110 formed in the rear side of a soft base material 46 is arranged between the case 26 and an air bag body storage part 46B provided in the soft base material 46 of a pillar garnish 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement structure of an occupant protection system for an automobile, and more particularly, to a structure in which a heavy load is applied to an airbag bag folded and stored over a front pillar and a roof side rail. The present invention relates to an arrangement structure of an occupant protection device for an automobile that protects an occupant's head by inflating in a curtain shape below a roof side rail in a vehicle cabin by gas ejected from an inflator at the time of a side collision.

[0002]

2. Description of the Related Art Conventionally, in an automobile, an inflator disposed in a front pillar is operated to extend over a front pillar and a roof side rail in order to improve the protection performance of an occupant's head in a side collision. An occupant protection device for inflating a curtain-shaped airbag bag housed between an interior material and a body inner panel has already been proposed. Hereinafter, a configuration disclosed in Japanese Patent Application Laid-Open No. 6-227340, which discloses this kind of vehicle occupant protection device, will be described.

As shown in FIG. 10, an occupant protection device 40 is provided.
Reference numeral 0 denotes a sensor 402 for detecting a side collision state, an inflator 404 which operates by detecting the side collision state to eject gas, and a front pillar 406.
And an elongate airbag body 412 arranged along the roof side rail 408 from the upper end and stored in the trim 410 in a folded state as main components. The front end of the airbag 412 is connected to the upper end of the inflator 404, and the rear end of the airbag 412 is located in front of the center pillar 414.

According to the above configuration, when the side collision is detected by the sensor 402, the inflator 40
4 operates to eject gas. For this reason, the jet gas is supplied into the airbag bag 412 and the airbag
At an inflation pressure of 2, the trim 410 is deployed. As a result, the airbag bag body 412 inflated in a curtain shape is interposed between the head of the occupant and the side of the passenger compartment.

[0005]

However, in the case of the above configuration, the airbag 412 needs to be firmly folded in order to store the airbag 412 in a narrow space between the front pillar 406 and the trim 410. . For this reason, the energy absorption amount of the secondary collision load on the occupant's head at the time of the low load side collision (that is, when the side collision load that does not activate the occupant protection device 400) is tightly folded as described above. It is conceivable that the airbag bag 412 is insufficient.

In consideration of the above facts, the present invention adopts a configuration in which the airbag bag is stored in a folded state between the body inner panel and the interior material, and the occupant's head in the event of a low load side collision is provided. It is an object of the present invention to obtain an arrangement structure of an occupant protection device for a vehicle which can reliably absorb a next collision load.

[0007]

According to a first aspect of the present invention, there is provided an inflator which is disposed at a predetermined portion of a vehicle body and injects gas at the time of a side collision where a high load acts, and straddles a front pillar and a roof side rail. And an airbag bag that is stored in a folded state and is inflated into a curtain shape below the roof side rail in the vehicle cabin by gas supplied from the inflator. An energy absorbing member provided in a space between a body inner panel and an interior material arranged at a predetermined interval on the vehicle interior side, and the interior material deployed when the airbag bag is deployed. An energy absorbing portion provided on the back surface of the deploying portion, and a long shape containing an airbag bag disposed between the energy absorbing member and the energy absorbing portion. Is characterized by having a airbag bag body case, a.

Therefore, in the event of a high load side collision, gas is ejected from the inflator. For this reason, the airbag bag, which is stored in a folded state over the front pillar and the roof side rail, is not hindered by the energy absorbing portion provided on the back surface of the deployed portion of the interior material, and the roof in the vehicle compartment is not hindered. It expands and deploys like a curtain below the side rails. Thereby, the airbag body is interposed between the vehicle body side portion and the occupant head, and the occupant head is protected.

On the other hand, in the event of a low load side collision, the inflator does not operate. Therefore, the airbag body is not inflated and interposed between the vehicle body side and the occupant's head.
However, even in this case, the occupant's head may collide with the interior material disposed at a predetermined interval on the vehicle inner side of the body inner panel due to the inertial force at the time of a side collision. In this case, in the present invention, the secondary collision load of the occupant's head is increased by the energy absorbing portion provided on the back surface of the deployed portion of the interior material and the energy absorbing member provided in the space between the body inner panel and the interior material. Is absorbed.

Further, since the energy absorbing portion is provided on the back surface of the expanded portion of the interior material, the shape retention of the interior material can be improved by the energy absorbing portion.

According to a second aspect of the present invention, in the arrangement structure of the occupant protection device for an automobile according to the first aspect, a cross-sectional shape of the airbag body case in a direction orthogonal to a longitudinal direction is substantially a parallelogram. It is characterized by having.

Therefore, since the thickness of the airbag body case can be reduced with respect to the gap between the interior material and the body inner panel, the gap between the interior material and the body inner panel can be reduced. Wide space is available.

According to a third aspect of the present invention, there is provided an inflator which is disposed at a predetermined portion of a vehicle body and injects gas when a high load acts on a side collision, and which is folded over a front pillar and a roof side rail. An airbag bag that is stored and inflated in a curtain shape below the roof side rail in the vehicle cabin by gas supplied from the inflator, and Elongated air that is provided in the space between the inner panel and the interior material that is arranged at a predetermined interval on the vehicle interior side, and that has a substantially parallelogram cross-sectional shape in a direction orthogonal to the longitudinal direction. A bag bag case, and an energy absorbing member disposed close to and along the outer periphery of the airbag bag case between the body inner panel and the airbag bag case. It is characterized by having a.

Therefore, in the event of a high load side collision, gas is ejected from the inflator. For this reason, the airbag bag body stored in a folded state over the front pillar and the roof side rail is inflated and deployed in a curtain shape below the roof side rail in the vehicle interior. Thereby, the airbag body is interposed between the vehicle body side portion and the occupant head, and the occupant head is protected.

On the other hand, at the time of the low load side collision, the inflator does not operate. Therefore, the airbag body is not inflated and interposed between the vehicle body side and the occupant's head.
However, even in this case, the occupant's head may collide with the interior material disposed at a predetermined interval on the vehicle inner side of the body inner panel due to the inertial force at the time of a side collision. In this case, in the present invention, the secondary collision load of the occupant's head is absorbed by the energy absorbing member disposed close to and along the outer periphery of the airbag body case between the airbag body case and the body inner panel. Since the cross-sectional shape in the direction orthogonal to the longitudinal direction of the airbag bag body case is substantially a parallelogram, the height dimension of the energy absorbing member can be set to be larger, and a larger amount of energy absorption can be obtained. .

According to a fourth aspect of the present invention, there is provided the vehicle occupant protection device according to the first aspect, wherein the energy absorbing portion is separate from the interior material.

Therefore, the material of the energy absorbing portion can be set to a material different from that of the interior material, and each material of the energy absorbing portion and the energy absorbing member can be arbitrarily selected.

According to a fifth aspect of the present invention, in the arrangement structure of the vehicle occupant protection device according to the first aspect, the energy absorbing portion is integral with the interior material.

Therefore, the interior material and the energy absorbing portion can be manufactured at one time, and the manufacturing is easy and the cost can be reduced.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] A first embodiment of an arrangement structure of a vehicle occupant protection device according to the present invention will be described with reference to FIGS.

The arrow FR in the figure indicates the forward direction of the vehicle,
P indicates the vehicle upward direction, and arrow IN indicates the vehicle width inside direction.

As shown in FIGS. 2 and 3, an airbag device 10 as a vehicle occupant protection device is provided with a sensor 12 for detecting a side collision state due to a heavy load of a predetermined value or more.
And a cylindrical inflator 14 for ejecting gas by actuation, and an airbag bag 16 folded in a predetermined folding manner as main components.

The sensor 12 is a center pillar (B pillar)
18 is disposed near the lower end of the vehicle body 18, and detects a side collision state when a side collision load of a predetermined value or more acts on the side of the vehicle body.

The inflator 14 is disposed near a connection between the front pillar (A-pillar) 20 and the instrument panel 22 and is connected to the sensor 12 described above. Therefore, when the sensor 12 detects the side collision state, the inflator 14 is operated. If the inflator 14 is disposed near the connection portion, there is an advantage that the front end 16A of the airbag 16 can be directly connected to the inflator 14 as described later. Alternatively, a configuration in which the front end portion 16A of the airbag bag body 16 is connected with a tube or the like may be employed. The inflator 14 includes a gas generating agent encapsulating type that generates a gas by burning a gas generating agent enclosed therein, and a high pressure gas injecting a high pressure gas by breaking a partition provided therein. Types and the like are applicable.

The airbag bag 16 is formed in a substantially parallelogram shape in a side view. The vertical portion of the airbag body 16 is formed by suturing or the like at an intermediate portion in the vertical direction, and crosses a tension line connecting a front end fixed point and a rear end fixed point of the airbag body 16 described later. A plurality of non-expandable portions 24 extending in the longitudinal direction are formed at predetermined intervals. Further, the airbag body 16 is folded in a predetermined folding manner to have a long shape, and an airbag body case 26 made of resin (see FIG. 1, hereinafter referred to as a case).
Housed within. Further, the above-described airbag bag body 16 includes a front pillar 20 and a roof side rail 28.
And straddling it. More specifically, the front end portion 16A of the airbag bag body 16 is arranged at the inflator arrangement position so that gas ejected from the inflator 14 flows in, and the intermediate portion 16B is connected to the front pillar 20 and the roof side rail 28. Along the rear end 16C
Are arranged near quarter pillars (C pillars) 30. Therefore, in this embodiment, the airbag bag body 16 longer in the vehicle front-rear direction than that used in the prior art is used. Next, the structure of the body and interior materials on the front pillar 20 side will be described. . As shown in FIG. 1, a front pillar 20 includes a pillar outer panel 32 having a hat-shaped cross section disposed outside the vehicle compartment, and a substantially flat pillar inner panel 34 serving as a body inner panel disposed inside the vehicle compartment.
And a pillar outer panel 32 and a pillar inner panel 34
And a pillar reinforcement 36 having a substantially hat-shaped cross-section, which is disposed in a sandwiched state therebetween. An opening weather strip 38 is elastically fitted to the rear end flange of the front pillar 20.

A pillar garnish 40 made of resin is provided as an interior material on the vehicle interior side of the pillar inner panel 34 of the front pillar 20 described above. The pillar garnish 40 includes a base material 42 arranged to face the pillar inner panel 34 and a skin 44 covering the surface of the base material 42 (the surface on the vehicle interior side). Further, the base material 42 includes a soft base material 46 formed of a soft resin material and formed in a convex curved shape, and a hard base material 48 formed of a hard resin material. The front side of the soft base material 46 is thickened (hereinafter, this portion is referred to as a “base portion 46A”),
The rear side of the soft base material 46 is thinned (hereinafter, this portion is referred to as an "airbag storage portion 46B"). Accordingly, the airbag storage portion 46B is configured to be easily elastically deformed around the hinge portion 50 serving as a connection portion with the base portion 46A. In addition, the terminal portion on the side of the airbag storage unit 46B is elastically locked to the above-mentioned opening weather strip 38.

The above-mentioned hard base material 48 is fixed to the base portion 46A side of the soft base material 46 with an adhesive 54 via a band-shaped strap 52 therebetween. Note that the hard base material 48 and the soft base material 46 can be integrally formed by double injection molding. The upper and lower ends of the strap 52 are bolted to the pillar inner panel 34 to prevent the pillar garnish 40 from scattering when the airbag body is inflated. Further, mounting seats 56 having a trapezoidal cross section are formed integrally with the hard base material 48 at appropriate intervals. The mounting seat 56 is elastically engaged with a mounting hole (not shown) of a convex portion 60 formed on the pillar inner panel 34 by a resin clip 58, thereby fixing the general portion of the pillar garnish 40. I have.

Next, the structure of the body and the interior material on the roof side rail 28 side will be described. As shown in FIG. 6, a roof rail portion 64 is provided at an outer end of the roof panel 62 in the vehicle width direction. Roof rail part 6
Reference numeral 4 denotes a rail outer panel 66 having a substantially hat shape in cross section, which protrudes relatively outside the vehicle compartment, a rail inner panel 68 as a body inner panel slightly protruding inward of the rail outer panel 66, and a rail outer panel. A rail reinforcement 70 formed in a substantially hat-shaped cross section along the rail 66 and sandwiched between the rail outer panel 66 and the rail inner panel 68 forms a closed cross-sectional structure. The upper end of the roof rail portion 64 composed of the three members is joined to the outer end of the roof panel 62 in the vehicle width direction by welding, and the opening weather strip 72 is fitted to the lower end of the roof rail portion 64. Have been.

A roof head lining (molded ceiling) 74 made of resin as an interior material is provided on the indoor side of the roof panel 62 and the roof rail portion 64 described above.
The roof head lining 74 is provided with a base material 76 that is disposed to face the roof panel 62 and the rail inner panel 68.
And a skin 7 covering the surface of the base material 76 (the surface on the vehicle interior side).
And 8. The outer end portion 74A of the roof head lining 74 is elastically locked to the above-mentioned opening weather strip 72.

Next, the main part of this embodiment will be described. As shown in FIG. 1, the pillar garnish 40 is disposed substantially parallel to the substantially flat pillar inner panel 34 at a predetermined interval, so that the base material 42 of the pillar garnish 40 and the pillar inner panel A predetermined space 80 is formed between the space 34 and the space 34. Similarly, as shown in FIG. 6, the outer end portion 74A side of the roof head lining 74 is disposed at a predetermined distance from the rail inner panel 68, whereby the outer end portion of the roof head lining 74 is 74A side and rail inner panel 6
8, a predetermined space 82 is formed. The space 80 on the front pillar 20 side and the space 82 on the roof side rail 28 communicate with each other.
A long energy absorbing member 84 made of a resin material and a long case 26 accommodating the airbag body 16 are arranged side by side in these spaces 80 and 82 in close proximity to each other. I have.

Specifically, on the front pillar 20 side, a case in which an energy absorbing member 84 is disposed at the front side of the space 80 and the airbag bag 16 is stored at the rear side of the space 80 26 are provided. On the other hand, on the roof side rail 28 side, the energy absorbing member 84 is disposed above the cabin of the space 82, and the case 26 containing the airbag bag 16 is disposed below the cabin of the space 82. Has been established. Hereinafter, the structure on the front pillar 20 side will be mainly described.

As shown in FIG. 4, the energy absorbing member 84 has a plane direction perpendicular to the longitudinal direction of the space 80 (see FIG. 1) and a predetermined direction along the garnish longitudinal direction. A plurality of ribs 8 arranged at intervals
6 (also referred to as horizontal ribs). These ribs 86
Are core portions of the energy absorbing member 84. Further, the plurality of ribs 86 are formed by a pair of connecting plates 8 arranged so that the direction perpendicular to the surface of the rib 86 is the surface direction and substantially opposed to the front and rear.
8, 90 (also referred to as vertical ribs). Further, a narrow width extending portion 8 extending toward the rear side of the space portion 80 along the pillar inner panel 34 is provided at an upper end portion (an end portion which is an outdoor side in an assembled state) of the rib 86 described above.
6A are integrally formed. As a result, the rear end of the rib 86, the extension 86A, and the airbag storage section 46B separate the rear side of the space 80 from the front side of the space 80. A case 26 for holding the shape that stores the bag body 16 in a folded state is disposed in a state of being close to the case. The cross-sectional shape of the case 26 in a direction perpendicular to the longitudinal direction (perpendicular to the longitudinal direction) is a substantially parallelogram. When attached to the pillar inner panel 34, the front side wall 26A of the case 26 is disposed at a position close to the rear end edge of the rib 86, and the outdoor side wall 26B of the case 26 is close to the extension 86A. It is arranged in the position to be. Therefore, in the state where the case 26 is arranged, the extending portion 86 </ b> A of the rib 86 described above is arranged between the outdoor wall portion 26 </ b> B of the case 26 and the pillar inner panel 34 with the direction perpendicular to the case longitudinal direction as the plane direction. .

As shown in FIG. 5, the air bag 16
The mounting portion 90 </ b> A extending from the connecting plate 90 is integrally formed between the ribs 86 arranged adjacent to the front end fixing portion. When the pillar garnish 40 is assembled, the mounting portion 90A is attached to the pillar inner panel 34.
Are arranged in parallel with the convex portions 60 of the first. Further, on the upper surface of the mounting portion 90A, a fin-shaped airbag fixing portion 16D provided on the airbag 16 is provided.
A case fixing portion 26C extending from the back side of the mounting portion 90A is provided with a case fixing portion 26C extending so as to cover the front and back surfaces of the airbag bag body fixing portion 16D, and a back surface of the convex portion 60 of the pillar inner panel 34. It is fastened together to the pillar inner panel 34 by a nut 98 arranged on the side.

As shown in FIG. 1, an energy absorbing portion 110 is formed in the space between the case 26 and the airbag storage portion 46B on the back side of the soft base material 46.

As shown in FIG. 4, the energy absorbing section 1
Numeral 10 has a plurality of ribs 112 (also referred to as horizontal ribs) that are arranged at predetermined regular intervals along the garnish longitudinal direction, with the direction perpendicular to the longitudinal direction of the space portion (the direction crossing) as the plane direction. . These ribs 112 are core portions of the energy absorbing section 110. The plurality of ribs 112 are formed by a pair of connecting plates 114, 1, 1.
16 (also referred to as vertical ribs). Further, the lower end portion of the above-mentioned rib 112 (the end portion which is on the indoor side in the assembled state) is provided with the airbag storage portion 46.
Narrow extension 11 extending to the front side of the space along B
2A is formed integrally. Thus, when attached to the pillar inner panel 34, the rear wall portion 26D of the case 26 is disposed at a position close to the front edge of the rib 112, and the indoor side wall portion 26E of the case 26 is It is arranged at a position close to. Therefore, the extending portion 112A of the rib 112 is arranged between the indoor side wall portion 26E of the case 26 and the airbag storage portion 46B with the direction perpendicular to the case longitudinal direction as the plane direction.

Between the extending portions 112A of the rib 112, there is a portion where the mounting portion 118 is integrally formed. The attachment portion 118 is provided in the airbag storage portion 4 of the extension 112A.
The energy absorbing unit 110 is fixed to the back surface of the airbag storage unit 46B by heat welding or the like.

A notch 120 is formed at the corner between the outdoor side wall 26B and the rear side wall 26D of the case 26 from the inside of the case.
Are formed, and are easily broken by the inflation pressure of the airbag bag body 16. Accordingly, when the airbag body is deployed, as shown in FIG. 7, the case 26 is broken starting from the notch 120 and the energy absorbing part 110 and the airbag together with the rear side wall part 26D and the indoor side wall part 26E of the case 26 are provided. The bag body storage portion 46B opens in the vehicle interior side direction (the direction of the arrow A in FIG. 7), and the airbag body 16 is deployed in the vehicle room through the formed gap.

As shown in FIG. 6, in the roof side rail 28, instead of the rib 86 described above, a rectangular plate-shaped rib 94 having a longer longitudinal dimension than the rib 86 is arranged. Similarly to the case 86 (see FIG. 1), an extension 94A extending between the case 26 and the rail inner panel 68 is integrally formed. In the roof side rail 28, the energy absorbing section 110 described above is used.
Instead, an energy absorbing portion 122 is provided between the case 26 and the outer end portion 74A of the roof head lining 74. The energy absorbing portion 122 has a plurality of ribs 124 (also referred to as horizontal ribs) arranged in a direction perpendicular to the longitudinal direction of the space (crossing direction) as a plane direction and arranged at predetermined regular intervals along the longitudinal direction of the garnish. It has.
These ribs 124 are core portions of the energy absorbing section 122. At the front end of the plurality of ribs 124, a mounting portion 126 is integrally formed. In the mounting portion 126, the energy absorbing portion 122 is provided on the back surface of the outer end portion 74A of the roof head lining 74 by heat. It is fixed by welding or the like.

A mounting portion 100 is formed integrally with the outer edge of the energy absorbing member 84 on the outside of the cabin, and a fin-shaped airbag bag is fixed between the mounting portion 100 and the rail inner panel 68. The case fixing portion 26 </ b> C extending so as to cover the front and back surfaces of the airbag bag fixing portion 16 </ b> D and the airbag portion fixing portion 16 </ b>
Is inserted and screwed into the nut 104 disposed on the back side of the rail inner panel 68, so that the energy absorbing member 84 and the case 26 are connected to the rail inner panel 68.
Has been tightened together.

As the above-mentioned fixing means, rivet fastening, screwing, clipping and the like can also be used.
In addition, by appropriately selecting the number, spacing, external dimensions, thickness, material, and the like of the ribs 86 and 94, the energy absorption characteristics of the energy absorbing member 84 are adjusted to be appropriate.

Next, the operation and effect of this embodiment will be described. When a high load equal to or more than a predetermined value acts on the side of the vehicle body, the sensor 12 detects that a high-load side collision has occurred. For this reason, the inflator 14 operates and a predetermined amount of gas is ejected. As a result, the airbag body 16 starts to expand, and the inflation pressure at that time causes the case 26 to break at the corners of the outdoor side wall portion 26B and the rear side wall portion 26D and expand. The inflated air bag body 16 pushes and opens the pillar garnish 40 of the front pillar 20 and the outer end 74A of the roof head lining 74 located on the roof side rail 28, and the curtain is positioned below the front pillar 20 and the roof side rail 28. Swelling in the shape of
It is interposed between the side of the vehicle body and the occupant head to protect the occupant head. In particular, as shown in FIG.
In this case, the energy absorbing section 110 and the airbag storing section 4 are formed together with the rear side wall 26D and the indoor side wall 26E of the case 26 by the inflation pressure of the airbag 16.
6B is opened in the vehicle interior side direction (the direction of arrow A in FIG. 7), and the airbag bag body 16 is deployed into the vehicle interior through the formed gap. For this reason, the energy absorbing part 110 does not hinder the deployment of the airbag body 16.

It should be noted that the inflating process of the airbag bag 16 will be supplemented. In the present embodiment, since the plurality of non-inflating portions 24 are formed at the middle of the airbag bag 16 in the vertical direction as described above, the inflator 14 is formed. After flowing out from the front end portion 16A of the airbag bag body 16, the gas ejected from the airbag bag 16 is divided vertically by the non-inflatable portion 24 located at the forefront end. Therefore, the outer periphery of the airbag bag body 16 is inflated so as to form a frame-shaped frame. Subsequently, gas flows between the non-inflated portions 24 to inflate the portion in the thickness direction of the airbag bag body. Let it. As a result, a predetermined tension acts between the non-inflating portions 24, and finally, the airbag 16 is substantially parallel with a large tension acting along a tension line T connecting the front end fixed point and the rear end fixed point. It expands into a quadrilateral shape (see FIG. 3).

On the other hand, at the time of a low load side collision (ie, when a side collision load that does not operate the airbag device 10 is applied), the inflator 14 does not operate. Therefore, the airbag body 16 is not inflated and interposed between the vehicle body side and the occupant's head. However, also in this case, the occupant's head inertia moves to the outside of the vehicle compartment due to the inertial force at the time of a side collision. Therefore, for example, in the case of an occupant sitting on the driver's seat side, the occupant's head may move in the direction of arrow A in FIG. In this case, in the present embodiment, since the resin energy absorbing portion 110 having the plurality of ribs 112 is disposed between the case 26 and the airbag storage portion 46B, the plurality of ribs together with the energy absorbing member 84 are provided. Due to the plastic deformation (buckling) of 112, a secondary collision load caused by a secondary collision of the occupant head is absorbed.

Similarly, in the case of an occupant sitting in the rear seat, the head of the occupant may move in the direction of arrow B in FIG. Also in this case, in the present embodiment, since the resin energy absorbing portion 122 having the plurality of ribs 124 is disposed between the case 26 and the outer end portion 74A of the roof head lining 74, the energy absorbing member 84 is provided. At the same time, the plurality of ribs 124 are plastically deformed (buckled), so that a secondary collision load caused by a secondary collision of the occupant head is absorbed.

Therefore, according to the present embodiment, the case 26 accommodating the airbag bag 16 is disposed between the pillar inner panel 34 and the pillar garnish 40 and between the rail inner panel 68 and the roof head lining 74. Even if the configuration is adopted, the secondary collision load of the occupant head at the time of the low load side collision can be reliably absorbed.

Further, according to the present embodiment, the case 26
Since the cross-sectional shape in a direction perpendicular to the longitudinal direction (a direction perpendicular to the longitudinal direction) is substantially a parallelogram, by adjusting the direction of the case 26, the pillar inner panel 34 and the The thickness of the case 26 can be reduced with respect to each gap between the pillar garnish 40 and the gap between the rail inner panel 68 and the roof head lining 74. As a result, the gaps between the pillar inner panel 34 and the pillar garnish 40 and the gaps between the rail inner panel 68 and the roof head lining 74 can be reduced, so that the vehicle interior space can be widened accordingly. In particular, in the case of the front pillar 20, the visibility is improved by making the front pillar 20 thinner.

Further, since the cross-sectional shape of the case 26 in a direction orthogonal to the longitudinal direction is substantially a parallelogram, the rigidity of the case 26 itself can be suppressed to be low, and the case 26 can absorb energy during a low load side collision. It can also act as a member.

In addition, the energy absorbing portion 11 made of resin
Since a plurality of ribs 112 and 124 are provided on 0 and 122, and the ribs 112 and 124 are plastically deformed to absorb energy, the ribs 112 and 124 are formed.
By adjusting the material, hardness, thickness, number of the resin, and the like of the resin of No. 4, an intended energy absorption effect can be obtained. Thereby, the protection performance of the occupant head at the time of the low load side collision can be further improved.

Further, according to the present embodiment, the back surface of the airbag storage portion 46B and the roof head lining 74 are provided.
The energy absorbing portions 110 and 12 are provided on the back surface of the outer end 74A.
2 are provided, these energy absorbing portions 110, 1
The shape retention of the outer end portion 74A of the airbag storage portion 46B and the roof head lining 74 is also improved by the use of the airbag 22.

Further, according to the present embodiment, since the energy absorbing portions 110 and 122 are separate from the airbag storage portion 46B and the outer end portion 74A of the roof head lining 74, the energy absorbing portions 110 and 122 are provided separately. Can be set to a material different from that of the airbag bag housing 46B and the outer end 74A of the roof head lining 74, and the materials of the energy absorbing parts 110 and 122 and the energy absorbing member 84 can be arbitrarily selected. .

Further, according to the present embodiment, the energy absorbing portions 110 and 122, the airbag bag housing portion 46B, and the outer end portion 74A of the roof head lining 74 are integrated (sub-assembled) in advance. It is possible to reduce the number of attaching work steps and the assembling work time.
Thereby, a significant cost reduction can be achieved. [Second Embodiment] Next, a description will be given of a second embodiment of the arrangement structure of the vehicle occupant protection device according to the present invention with reference to FIG.

The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 8, in this embodiment,
In the front pillar 20, the energy absorbing portion 110
Is formed integrally with the back surface of the airbag storage unit 46B. Although not shown, also in the roof side rail 28, the energy absorbing portion is integrally formed on the back surface of the roof head lining. Therefore, in the present embodiment, the airbag bag 16 is disposed between the pillar inner panel 34 and the pillar garnish 110 in the same manner as in the first embodiment. The secondary collision load can be reliably absorbed, and the energy absorbing portion is integrally formed with the interior material, so that the number of assembling work steps and the assembling work time can be reduced. As a result, the cost can be significantly reduced. [Third Embodiment] Next, a third embodiment of the arrangement structure of the vehicle occupant protection device according to the present invention will be described with reference to FIG.

The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 9, in this embodiment,
In the front pillar 20, the energy absorbing portion 110
1 (see FIG. 1), and is characterized in that the cross-sectional shape in a direction orthogonal to the longitudinal direction of the case 26 (perpendicular to the longitudinal direction) is a substantially parallelogram. Although not shown, the roof side rail 28 also has no energy absorbing portion, and has a substantially parallelogram cross-sectional shape in a direction perpendicular to the longitudinal direction of the case 26 (a direction perpendicular to the longitudinal direction). ing. Therefore, in this embodiment, since the cross-sectional shape of the case 26 in the direction perpendicular to the longitudinal direction is substantially a parallelogram, the extending portion 86 </ b> A of the rib 86 of the energy absorbing member 84 accordingly.
Height H can be set large, and the energy absorbing member 8
In 4, the larger amount of energy absorption can be obtained. As a result, even when the airbag bag 16 is arranged between the pillar inner panel 34 and the pillar garnish 110, the secondary collision load of the occupant head at the time of the low load side collision can be reliably absorbed. it can.

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are included within the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, the energy absorbing units 110 and 122 are not limited to the configuration of this embodiment, and other plastically deformable members such as a honeycomb structure can be plastically deformed by a secondary collision load of the occupant head at the time of low load side collision. well. Further, an elastic member such as sponge or rubber may be used.

[0057]

According to the first aspect of the present invention, there is provided an inflator which is disposed at a predetermined portion of a vehicle body and injects gas at the time of a side collision where a high load is applied, and folds over a front pillar and a roof side rail. An airbag bag that is stored in a state and is inflated in a curtain shape below a roof side rail in a vehicle cabin by a gas supplied from an inflator. An energy absorbing member provided in a space between a body inner panel and an interior material arranged at a predetermined interval on the vehicle interior side, and a deployment portion of the interior material that is deployed when the airbag bag is deployed. An energy absorbing portion provided on the back surface, and a long airbag bag case provided between the energy absorbing member and the energy absorbing portion and containing the airbag bag. Therefore, even if the airbag bag is stored in a folded state between the body inner panel and the interior material, the secondary collision load of the occupant head at the time of the low load side collision is reliably absorbed. It has an excellent effect that it can be performed. In addition, the energy absorbing portion has an excellent effect of improving the shape retention of the interior material.

According to a second aspect of the present invention, in the installation structure of the vehicle occupant protection device according to the first aspect, a cross-sectional shape of the airbag body case in a direction orthogonal to the longitudinal direction is substantially a parallelogram. Therefore, in addition to the effect described in the first aspect, the gap between the interior material and the body inner panel can be reduced, and an excellent effect that the vehicle interior space can be widened accordingly. In addition, it has an excellent effect of improving visibility.

According to a third aspect of the present invention, there is provided an inflator which is disposed at a predetermined portion of a vehicle body and injects gas at the time of a side collision where a high load is applied, and which is folded over a front pillar and a roof side rail. An airbag bag that is stored and inflated in a curtain shape below the roof side rail in the vehicle cabin by gas supplied from the inflator, and Elongated air that is provided in the space between the inner panel and the interior material that is arranged at a predetermined interval on the vehicle interior side, and that has a substantially parallelogram cross-sectional shape in a direction orthogonal to the longitudinal direction. A bag bag case, and an energy absorbing member disposed between the body inner panel and the air bag bag case, the energy absorbing member being disposed close to and along the outer periphery of the air bag bag case. Even if the airbag bag is stored in a folded state between the body inner panel and the interior material, it is possible to reliably absorb the secondary collision load of the occupant head at the time of low load side collision. It has an excellent effect.

According to a fourth aspect of the present invention, in the installation structure of the vehicle occupant protection device according to the first aspect, the energy absorbing portion is separate from the interior material. In addition, the material of the energy absorbing portion can be set to a material different from that of the interior material, and there is an excellent effect that each material of the energy absorbing portion and the energy absorbing member can be arbitrarily selected.

According to a fifth aspect of the present invention, in the arrangement structure of the vehicle occupant protection device according to the first aspect, the energy absorbing portion is integral with the interior material. It has an excellent effect that manufacturing is easy and cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view taken along line 1-1 of FIG.

FIG. 2 is a schematic side view showing a stored state of an airbag body in the arrangement structure of the vehicle occupant protection device according to the first embodiment of the present invention.

FIG. 3 is a schematic side view showing a deployed state of the airbag body in the arrangement structure of the vehicle occupant protection device according to the first embodiment of the present invention.

FIG. 4 is an exploded perspective view showing the airbag body case, the energy absorbing member, and the energy absorbing portion in the arrangement structure of the vehicle occupant protection device according to the first embodiment of the present invention, as viewed from outside the rear of the vehicle.

FIG. 5 is an exploded perspective view showing the airbag body case and the energy absorbing member in the arrangement structure of the vehicle occupant protection device according to the first embodiment of the present invention, as viewed from the front inside of the vehicle.

FIG. 6 is an enlarged sectional view taken along line 6-6 in FIG. 2;

FIG. 7 is an operation explanatory view of the arrangement structure of the vehicle occupant protection device according to the first embodiment of the present invention.

FIG. 8 is a sectional view corresponding to FIG. 1 in an arrangement structure of a vehicle occupant protection device according to a second embodiment of the present invention.

FIG. 9 is a cross-sectional view corresponding to FIG. 1 in an arrangement structure of a vehicle occupant protection device according to a third embodiment of the present invention.

FIG. 10 is a schematic side view showing a stored state of an airbag body in an arrangement structure of a vehicle occupant protection device according to a conventional embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 airbag device (automotive occupant protection device) 12 sensor 14 inflator 16 airbag bag 20 front pillar 26 airbag bag case 28 roof side rail 34 pillar inner panel (body inner panel) 40 pillar garnish (interior material) 46B Pillar garnish bag storage section 68 Rail inner panel (body inner panel) 74 Roof head lining (interior material) 74A Roof head lining outer end 84 Energy absorbing member 110 Energy absorbing section 122 Energy absorbing section

Claims (5)

[Claims] 1. An inflator which is disposed at a predetermined portion of a vehicle body and injects gas at the time of a side collision where a high load is applied, is stored in a folded state over a front pillar and a roof side rail, and is supplied from the inflator. An airbag bag body inflated in a curtain shape below the roof side rail in the vehicle interior by the gas, wherein the body occupant protection device comprises: An energy absorbing member provided in a space between the interior material arranged at a predetermined interval, and an energy absorbing portion provided on the back surface of the deployed portion of the interior material that is deployed when the airbag bag is deployed. A long airbag body case disposed between the energy absorbing member and the energy absorbing part and containing the airbag body. An arranging structure of an occupant protection device for a vehicle, characterized in that: 2. The arrangement structure of an occupant protection system for an automobile according to claim 1, wherein a cross-sectional shape of the airbag body case in a direction orthogonal to a longitudinal direction is substantially a parallelogram. 3. An inflator which is disposed at a predetermined portion of a vehicle body and injects gas when a high load acts on a side collision, and is stored in a folded state over a front pillar and a roof side rail, and supplied from the inflator. An airbag bag body inflated in a curtain shape below the roof side rail in the vehicle interior by the gas, wherein the body occupant protection device comprises: A long airbag body case, which is provided in a space between the interior materials arranged at predetermined intervals and has a substantially parallelogram cross-sectional shape in a direction orthogonal to the longitudinal direction, An energy absorbing member disposed between the body inner panel and the airbag body case along the outer periphery of the airbag body case. Arrangement structure of an automotive occupant protection device for. 4. The arrangement structure of an occupant protection system for an automobile according to claim 1, wherein said energy absorbing portion is separate from said interior material. 5. The arrangement structure of an occupant protection system for an automobile according to claim 1, wherein said energy absorbing portion is integral with said interior material.